Mounting arm



FIG. 1 is a front perspective view of the mounting arm;

FIG. 2 is a top plan view of the mounting arm;

FIG. 3 is a an underneath plan view of the mounting arm;

FIG. 4 is a side view of the mounting arm;

FIG. 5 is a rear view of the mounting arm; and,

FIG. 6 is a front view of the mounting arm.

The broken lines shown in all Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mounting arm, as shown and described. 